My latest work. Done with GIMP. 
Nice work - I really like the general lighting/colours. I can’t exactly tell what it is, though.:o But then again, who cares? I think it’s very interesting. The lighting looks kind of like a sunset. What if there was a sun behind the trees and you could see the beams being broken up by the branches? And then it would highlight the edges of the ‘vegetation’ in the foreground. Just a suggestion.
blenditall: Wow, thanks. Yup, I’d love to do that too, huhu, but I can’t, I dunno why… =(
Of course it would be easier if you were doing it in 3d…:o You could use blender to do the effect, with spotlights (halo on)… and then somehow composite it…? Might be hard, I dunno…